JP2010057843A - Attaching structure of washing nozzle and rinsing nozzle, and dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily attach and detach a rinsing nozzle and a washing nozzle and to safely attach and detach the rinsing nozzle and the washing nozzle. <P>SOLUTION: In the attaching structure of the washing nozzle and the rinsing nozzle, the front end of washing water piping is inserted into the washing nozzle, rinsing water piping fixed to the inside center of the washing water piping and projecting from the front end of the washing water piping passes through the washing nozzle, an aqueduct is fitted to the front end of the rinsing water piping, the through-hole of an odd-shaped nut in which recesses and projections are formed on the outer side surface and the front end part of the rinsing water piping are threadedly engaged, and the washing nozzle is freely rotatably fixed. Further, the aqueduct is fixed to the rinsing water piping, the aqueduct projecting from the through-hole of the odd-shaped nut is fitted to the insertion hole of a nozzle holder holding a nozzle header, an end nut is threadedly inserted into the aqueduct, and the rinsing nozzle is freely rotatably fixed to the aqueduct. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rinsing nozzle of a dishwasher, a mounting structure of the cleaning nozzle, and a dishwasher having the mounting structure.

  In order to facilitate cleaning of the interior of the dishwasher, for example, the inner wall of the washing water tank, the rinsing nozzle and the washing nozzle, the rinsing nozzle and the washing nozzle installed above and below the washing room of the dishwasher can be attached and detached. The attachment structure of the rinsing nozzle and the cleaning nozzle is employed (see, for example, Patent Document 1).

  This Patent Document 1 only discloses that the rinsing nozzle and the cleaning nozzle are detachable, and the mounting structure thereof is not clear. A hexagonal bolt and a hexagonal nut are used, the cleaning nozzle is positioned with a hexagonal nut, and the rinsing nozzle is fastened and fixed with a hexagonal bolt (for example, see FIG. 2 of Patent Document 2).

  That is, the cleaning nozzle is rotatably installed at the end of the cleaning water pipe, the rinsing water pipe protruding from the end of the cleaning water pipe passes through the cleaning nozzle, and the end of the rinsing water pipe The rinsing nozzle is rotatably installed, and the cleaning nozzle is positioned by screwing a hexagonal nut outside the rinsing water pipe, and the hexagonal bolt is inserted into the rinsing water pipe and screwed into the rinsing nozzle. And a cleaning nozzle is attached.

  Further, the washing nozzle is formed in an elongated dish shape, and the case having a flange at the edge is overlapped from above and below, the flanges of the respective cases are overlapped, and the flange portion is seam welded.

JP 2001-29305 A JP 2005-230192 A

  However, in the above prior art, a tool such as a wrench or a spanner is required for the head to fasten or loosen the hexagonal bolt and hexagonal nut in order to attach and detach the rinsing nozzle and the washing nozzle. It was complicated, and it took time to attach and detach the rinsing nozzle and the cleaning nozzle. In particular, to attach and detach the rinsing nozzle and cleaning nozzle installed above the cleaning chamber, hold the rinsing nozzle and cleaning nozzle, and also the bolt or nut with one hand while holding the tool with the other hand. This operation is more complicated, and the attachment / detachment operation cannot be easily performed. It takes time to attach / detach the rinsing nozzle and the cleaning nozzle, and this problem is remarkable.

  Also, since the cleaning nozzle is formed by seam welding the flange parts of the upper and lower cases, corners may remain on the flange, and there is a risk of damaging the operator's hand when the cleaning nozzle is attached or detached. This makes it difficult for the operator to hold the washing nozzle without worrying about the holding position and how to hold it, making the work complicated and taking time to attach and remove the rinsing nozzle and the washing nozzle. It was.

  Accordingly, an object of the present invention is to make it easy to attach and detach the rinsing nozzle and the cleaning nozzle, and to make it possible to safely attach and detach the rinsing nozzle and the cleaning nozzle.

  The present invention as a means for solving the above-mentioned problems is characterized in that, in a cleaning room containing tableware, the cleaning water is sprayed from a cleaning nozzle to clean the tableware, and then rinse water is sprayed from a rinsing nozzle. A washing nozzle and a rinsing nozzle mounting structure in a dishwasher for rinsing tableware, wherein a front end of a washing water pipe is inserted into the washing nozzle and fixed to an inner center of the washing water pipe. A rinsing water pipe projecting from the tip of the pipe passes through the washing nozzle, a water guide pipe is inserted into the tip of the rinsing water pipe, and a through hole of a concavo-convex nut having a concavo-convex formed on the outer surface and a tip of the rinsing water pipe The wash nozzle is rotatably fixed, the water guide pipe is fixed to the rinse water pipe, and the water guide pipe protruding from the through hole of the concavo-convex nut serves as a nozzle header. A washing nozzle and a rinsing nozzle, wherein the rinsing nozzle is rotatably fitted in an insertion hole of a nozzle holder to be held, an end nut is screwed into the water conduit, and the rinse nozzle is rotatably fixed to the water conduit. This is the mounting structure.

  In the mounting structure, a thin tube portion having an outer diameter smaller than the outer diameter of the other portion is formed at the tip of the washing water pipe, and the thin tube portion is inserted into a washing nozzle, and the washing water pipe and the washing water pipe are washed. The attachment structure of the cleaning nozzle and the rinsing nozzle is characterized in that a packing is interposed between the nozzles, and a packing is interposed between the uneven nut and the cleaning nozzle.

  Further, in the above mounting structure, an O-ring is installed between the flange provided on the outer surface of the water conduit and the front end surface of the rinsing water pipe, and the hook is engaged with the uneven nut, The cleaning nozzle and rinsing nozzle mounting structure is characterized in that an O-ring is installed between the tip surface and the end nut head.

  Furthermore, it is the dishwasher characterized by including the attachment structure of the said washing nozzle and the rinsing nozzle.

  In the dishwasher, the cleaning nozzle is formed in an elongated dish shape, having a concave cross section, and a pair of cases having flanges on the edges, overlapping the flanges in the vertical direction, and bending one flange. The dishwasher is characterized by being formed by sandwiching and fixing the other flange.

  Further, in the tableware washing machine, the bottom surface of the back case located above the cleaning nozzle installed on the upper side is provided with a slope that is lowered toward the side edge in the short direction of the back case. It is a washing machine.

  Furthermore, in a washing room storing dishes, washing is performed in a dishwashing machine in which washing water is sprayed from a washing nozzle to wash the dishes, and then rinsing water is jetted from a rinsing nozzle to rinse the dishes. A method of attaching a nozzle and a rinsing nozzle, wherein a front end of a cleaning water pipe is inserted into the cleaning nozzle, and is fixed to an inner center of the cleaning water pipe, and the rinsing water pipe protruding from the front end of the cleaning water pipe is cleaned. Insert the water guide pipe into the tip of the rinsing water pipe through the nozzle, screw the threaded through hole of the concavo-convex nut with irregularities formed on the outer surface, and the rinsing water pipe to rotate the washing nozzle And fixing the water conduit to the rinsing water pipe, and inserting the water conduit protruding from the through hole of the concave and convex nut into an insertion hole of a nozzle holder holding a nozzle header, And screwed to the end nuts, a rinsing nozzle cleaning nozzle and method of mounting rinsing nozzles, characterized in that rotatably fastened to the water conduit.

  According to the present invention as described above, the rinsing nozzle and the cleaning nozzle can be easily attached and detached. Moreover, the rinsing nozzle and the washing nozzle could be safely attached and detached.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged view of a rinsing nozzle and a mounting portion of the cleaning nozzle installed on the lower side in the cleaning chamber 10 of the dishwasher 1 shown in FIG. 9, and FIG. 2 is a lower rinsing nozzle and cleaning nozzle. FIG. 3 is an enlarged view of a rinsing nozzle and an attachment portion of the cleaning nozzle installed on the upper side in the cleaning chamber 10 of the dishwasher 1 shown in FIG. 5, and FIG. FIG. 5 is a perspective view of the water conduit 9, FIG. 6 is a plan view (a) and a side view (b) of the upper cleaning nozzle, and FIG. Fig. 6 (a) is a cross-sectional view taken along the line A-A, Fig. 8 is a diagram showing a structure for attaching the upper and lower rinsing nozzles and the washing nozzle to the dishwasher, and Fig. 9 is a tableware washing machine. FIG.

  As shown in FIGS. 8 and 9, the dishwasher 1 of the present invention is supported by a lower housing 11 and a rear wall 13 erected on the back of the lower housing 11, and is slidable in the vertical direction on the rear wall 13. A cleaning chamber 10 is formed above the lower housing 11 and stores and cleans dishes to be cleaned. Both ends of the lid 14 are pivotally supported on both sides of the rear wall 13, and a U-shaped handle 141 is pivotally supported on the lid 14 via an arm 142 and has an intermediate portion positioned in front of the lid 14. The cleaning chamber 10 is opened and closed by the vertical movement of the lid 14.

  A cleaning tank 2 is provided on the upper portion of the lower housing 11, and a partition plate 31 and a garbage receiving basket 32 are detachably installed between the cleaning tank 2 and the cleaning chamber 10. The washing tank 2 is provided with an overflow pipe (not shown) so that water does not overflow from the washing tank 2. Above the cleaning tank 2, a rack rail 33 on which a rack (not shown) in which dishes to be cleaned are stored is placed so as to be rotatable in the direction of the rear wall 13. A washing water pump (not shown), a rinsing water pump 39, and an electrical board (not shown) for controlling the operation of the dishwasher 1 are housed at the bottom of the lower housing 11 and below the washing tank 2. Yes.

  The cleaning water pipe 5 connected to the cleaning water pump passes through the bottom surface 21 of the cleaning tank 2 and protrudes to the approximate center in the cleaning tank 2 and branches, one of which is directed upward and toward the cleaning chamber 10. The other side is bent, rises on the rear wall 13 side, is bent downward at the upper center of the cleaning chamber 10, and is installed with the tip directed downward. The rinsing water pipe 6 connected to the rinsing water pump 39 penetrates the bottom surface 21 of the cleaning tank 2 and protrudes into the cleaning tank 2 and branches in the cleaning tank 2. 2 enters the cleaning water pipe 5 protruding upward at the approximate center, protrudes from the tip thereof, bends the other, rises at the rear wall 13 side, and at the upper approximate center of the cleaning chamber 10 at the cleaning water pipe 5 and protrudes downward from the tip of the wash water pipe 5 facing downward. A cleaning nozzle 7 is attached to the tip of each cleaning water pipe 5 and a rinsing nozzle 8 is detachably attached to the tip of the rinsing water pipe 6.

  The cleaning water pump is connected to a drain pipe (not shown) connected to a drain port (not shown) drilled in the bottom surface 21 of the cleaning tank 2, sucks the cleaning water in the cleaning tank 2, and includes a cleaning water pipe 5 and a cleaning nozzle 7. Send to. The rinsing water pump 39 is connected to a hot water supply device for supplying hot water provided outside (not shown), and sends unused hot water to the rinsing water pipe 6 and the rinsing nozzle 8.

  The cleaning nozzle 7 and the rinsing nozzle 8 provided on the lower side of the cleaning chamber 10 are installed between the partition plate 31 and the rack rail 33, and the upper cleaning nozzle 7 and the rinsing nozzle 8 are located above the cleaning chamber 10. It is located at.

  The use and operation of such a dishwasher 1 will be described. A rack (not shown) in which dishes to be cleaned are stored is placed on the rack rail 33, and the lid 14 is moved downward by the handle 141 to wash the washing chamber 10. Close. When the lid 14 is closed, the proximity switch is automatically turned on, a washing water pump (not shown) is operated, and the washing water 200 in the washing tank 2 is sent to the washing nozzle 7 through the washing water pipe 5. Or it is good also as a structure which turns on the switch 101 of the operation start of the operation panel 100 connected with the electrical equipment panel 37, and operates a washing water pump. The washing water sent to the washing nozzle 7 is ejected from the nozzle hole 71 toward the tableware to be washed and various members of the dishwasher 1 in the washing chamber 10. Since the washing nozzle 7 is rotatably installed, it is rotated by the washing water jet. Washing water obtained by washing the various members of the dishwasher 1 in the tableware and washing room 10 flows through the partition plate 31 and the garbage basket 32, and the garbage attached to the tableware is collected in the garbage basket 32. Unmixed cleaning water flows into the cleaning tank 2 again, and thereafter circulates in the same manner.

  After washing for a predetermined time, the washing water pump is stopped, the rinsing water pump 39 is activated, and unused hot water is sent to the rinsing water pipe 6 and the rinsing nozzle 8 from a water heater that supplies hot water provided outside. . The rinsing water sent to the rinsing nozzle 8 is ejected from the nozzle hole 83 toward the dishes to be rinsed and various members of the dishwasher 1 in the washing chamber 10. Since the rinsing nozzle 8 is rotatably installed, it is rotated by the rinsing water jet. The rinsing water that has rinsed various members of the dishwasher 1 in the tableware and the washing chamber 10 flows through the partition plate 31 and the garbage receiving basket 32 and flows into the washing tank 2. When the water in the cleaning tank 2 increases, the water is drained from the overflow pipe to the outside of the cleaning tank 2. After rinsing for a predetermined time, the rinsing water pump 39 is stopped and the washing of the dishes is completed.

  Next, the attachment structure of the washing nozzle 7 and the rinsing nozzle 8 will be described. As described above, the dishwasher 1 is provided with the cleaning nozzle 7 and the rinsing nozzle 8 on the upper side and the lower side. The structures of the cleaning nozzle 7 and the rinsing nozzle 8 are the same on the upper side and the lower side, and the mounting structure is vertically symmetrical on the upper side and the lower side. The cleaning nozzle 7 and the rinsing nozzle 8 may be installed only on one of the upper side and the lower side.

  As shown well in FIGS. 1 to 4, 6, and 7, the cleaning nozzle 7 has a pair of cases, that is, an elongated dish shape, a concave cross section, a flange 73 at the edge, and a longitudinal direction. A surface case 75 having a nozzle hole 71 at a predetermined interval and having a pipe insertion hole 72 into which the rinsing water pipe 6 is inserted in the center, and a flange 76 at the edge having an elongated dish shape and a concave section. And a back case 79 having a tube insertion hole 77 into which the cleaning water pipe 5 is inserted at the center thereof is overlapped and fixed in the vertical direction.

  When the front case 75 and the back case 79 are each formed of stainless steel or the like, it is possible to carry out the seam welding by energizing the overlapped flanges. However, as shown in FIG. In order to prevent the operator's hand from being damaged without making it, it is preferable that one flange 73 is bent and the other flange 76 is sandwiched, caulked, sandwiched and fixed. The flange 76 may be bent and the other flange 73 may be sandwiched.

  In addition, the bottom surface 792 of the back case 79 positioned above the cleaning nozzle 7 installed on the upper side is not a flat surface that is horizontal when installed, and the bottom surface 792 of the back case 79 is connected to the side edge in the short direction of the back case 79. It is preferable to provide an inclination that goes downward. By adopting such a shape, it is possible to prevent the cleaning water from accumulating on the back case 79 of the cleaning nozzle 7 after the end of the cleaning operation, and shorten the time for dripping the cleaning liquid from the cleaning nozzle 7 after the end of the cleaning operation. In addition, mixing of the cleaning liquid and rinsing water can be prevented.

  In order to provide an inclination that lowers the bottom surface 792 of the back surface case 79 toward the lateral end of the back surface case 79, the bottom surface 792 has a cross section in the short direction of the cleaning nozzle 7 as shown in FIG. In addition to the curved surface shape as described above, a flat shape inclined so as to be lowered toward one or both sides in the short direction of the cleaning nozzle 7 is the same. An effect can be obtained.

  The rinsing nozzle 8 is formed to include a nozzle holder 82 that is provided with a plurality of cylindrical nozzle headers 81 provided with ejection openings 83 at a predetermined interval in the longitudinal direction and that has a closed tip, and is held radially. The nozzle header 81 is inserted into the header installation cylinder part 821 protruding in the lateral direction of 82, and is fixed by a screw 825 that penetrates the header installation cylinder part 821.

  Insertion holes 826 into which the water guide pipes 9 are inserted are respectively provided on the upper and lower surfaces of the nozzle holder 82 in a direction perpendicular to the header installation cylinder portion 821, and the water guide pipes 9 are rotatable outside the insertion holes 826. A bearing 85 to be inserted is provided. The bearing 85 has a flange 852 protruding outward from one end of the cylindrical portion 851, and a fixed cylindrical portion 828 for fixing the bearing 85 is provided on the upper and lower surfaces of the nozzle holder 82, and the bearing 85 is provided on the fixed cylindrical portion 828. Is inserted with the flange 852 facing the nozzle holder 82, the snap ring 830 is locked to the recess 829 provided on the inner surface of the fixed cylinder portion 828, and the flange 852 is locked by the snap ring 830, Is fixed to the nozzle holder 82.

  As shown in FIGS. 1 and 3, a rinsing water pipe 6 is disposed substantially at the center of the front end portion of the cleaning water pipe 5, and the rinsing water pipe 6 protrudes from the front end of the cleaning water pipe 5. Note that the upper and lower cleaning nozzles 7 and the rinsing nozzle 8 are vertically and symmetrically structured, and therefore will be described using the lower structure shown in FIGS.

  A thin tube portion 51 having an outer diameter smaller than the outer diameter of the other portion is formed at the tip of the cleaning water pipe 5, and a step portion 52 is formed. The thin tube portion 51 is inserted into the tube insertion hole 77 of the back case 79 of the cleaning nozzle 7 and inserted into the cleaning nozzle 7. A packing 26 locked to the stepped portion 52 is interposed between the cleaning water pipe 5 and the cleaning nozzle 7.

  The rinsing water pipe 6 passes through the pipe insertion hole 77 and the pipe insertion hole 72 of the cleaning nozzle 7 and passes through the cleaning nozzle 7. A water conduit 9 is inserted into the inner diameter of the distal end of the rinsing water pipe 6, and an O-ring 22 into which the water conduit 9 is inserted is disposed between the flange 91 provided on the outer surface of the water conduit 9 and the distal surface of the rinsing water pipe 6. is set up.

  Then, an unevenness is formed on the outer surface, and a screw to be provided in the through hole 42 of the uneven nut 4 that can be manually rotated by an operator is screwed with a male screw provided on the outer periphery of the tip of the rinsing water pipe 6. Let The tip 41 of the concavo-convex nut 4 is inserted into the tube insertion hole 72, and the water conduit 9 protrudes from the through hole 42 of the concavo-convex nut 4. A step portion 422 is provided in the through hole 42 of the uneven nut 4, engages with the flange 91 of the water guide tube 9, and the O-ring 22 is pressed by fastening the uneven nut 4 to prevent water leakage. A packing 25 is interposed between the concave / convex nut 4 and the cleaning nozzle 7.

  Further, the water guide pipe 9 is inserted into the upper and lower insertion holes 826 of the nozzle holder 82 and is rotatably supported by the upper and lower bearings 85, and the water supply hole 93 of the water guide pipe 9 is connected to the header installation cylinder portion 821. It is located in the part 98. An end nut 28 is screwed into a screw to be provided at the inner diameter of the tip of the water conduit 9. The end nut 28 is provided with unevenness on the side surface of the head 281 so that the operator can rotate it by hand. An O-ring 38 is inserted into the threaded portion 282, and the O-ring 38 installed between the distal end surface of the water guide tube 9 and the head 281 of the end nut 28 is pressed by fastening the end nut 28. .

  Because of such a structure and configuration, the washing nozzle 7 and the rinsing nozzle 8 are attached and detached by the operator directly fastening or loosening the concave and convex nuts 4 and the end nuts 28 without using an instrument. I can do it.

Enlarged view of the attachment part of the lower rinsing nozzle and cleaning nozzle Exploded perspective view of lower rinsing nozzle and cleaning nozzle Enlarged view of the attachment part of the upper rinsing nozzle and cleaning nozzle Exploded perspective view of upper rinsing nozzle and cleaning nozzle Perspective view of water conduit Plan view (a) and side view (b) of upper cleaning nozzle FIG. 6A is a cross-sectional view taken along the line AA, and is a cross-sectional view of an embodiment of the cleaning nozzle of the present invention. The figure which shows the attachment structure to the dishwasher of the upper and lower rinse nozzle and the washing nozzle Perspective view of an embodiment of the dishwasher of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tableware washing machine 10 Washing room 100 Operation panel 11 Lower housing 13 Back wall 14 Lid 141 Handle 2 Washing tank 28 End nut 4 Concave nut 5 Washing water piping 6 Rinsing water piping 7 Washing nozzle 71 Nozzle hole 73 Flange 75 Surface case 76 Flange 79 Back case 792 Bottom case bottom 8 Rinse nozzle 81 Nozzle header 82 Nozzle holder 821 Header installation cylinder 85 Bearing 9 Water guide pipe 91 ９

Claims (7)

A washing nozzle in a dishwasher for rinsing the dishes by spraying washing water from a washing nozzle and then rinsing water from a rinsing nozzle in a washing room containing the dishes; A rinsing nozzle mounting structure, wherein a front end of a cleaning water pipe is inserted into the cleaning nozzle, is fixed to an inner center of the cleaning water pipe, and a rinsing water pipe protruding from the front end of the cleaning water pipe connects the cleaning nozzle. The water guide pipe is inserted into the tip of the rinsing water pipe, the through hole of the concavo-convex nut with the ruggedness formed on the outer surface and the tip of the rinsing water pipe are screwed together, and the washing nozzle is rotatably fixed And the water conduit is fixed to the rinse water pipe,
The water conduit protruding from the through hole of the concave and convex nut is rotatably fitted into an insertion hole of a nozzle holder that holds a nozzle header, an end nut is screwed into the water conduit, and a rinse nozzle is inserted into the water conduit. An attachment structure for a washing nozzle and a rinsing nozzle, wherein the washing nozzle and the rinsing nozzle are fixed rotatably.   A thin tube portion having an outer diameter smaller than the outer diameter of the other portion is formed at the tip of the washing water pipe, the thin tube portion is inserted into the washing nozzle, and packing is provided between the washing water pipe and the washing nozzle. The attachment structure of the cleaning nozzle and the rinsing nozzle according to claim 1, wherein packing is interposed between the concave and convex nut and the cleaning nozzle.   An O-ring is installed between the scissors provided on the outer surface of the water conduit and the front end surface of the rinsing water pipe. The scissors are engaged with the concave and convex nuts, and the front end surface of the water conduit and the end nuts The mounting structure for the washing nozzle and the rinsing nozzle according to claim 1, wherein an O-ring is installed between the heads.   A dishwasher comprising the attachment structure for the washing nozzle and the rinsing nozzle according to any one of claims 1 to 3.   The cleaning nozzle has a long and narrow dish shape, and has a concave cross section, and a pair of cases having flanges at the edges. The flanges are overlapped in the vertical direction, and one flange is bent and the other flange is sandwiched and fixed. The dishwasher according to claim 4, wherein the dishwasher is formed.   6. The dishwasher according to claim 5, wherein the bottom surface of the back case located above the cleaning nozzle installed on the upper side is provided with a slope that is lowered toward the lateral end of the back case. .   A washing nozzle in a dishwasher for rinsing the dishes by spraying washing water from a washing nozzle and then rinsing water from a rinsing nozzle in a washing room containing the dishes; A method of attaching a rinsing nozzle, wherein a front end of a cleaning water pipe is inserted into the cleaning nozzle, and the rinsing water pipe that is fixed to an inner center of the cleaning water pipe and protrudes from the front end of the cleaning water pipe is connected to the cleaning nozzle. Insert a water guide pipe at the tip of the rinse water pipe, screw through the through-hole of the concavo-convex nut with the ruggedness formed on the outer surface and the tip of the rinse water pipe, and fix the washing nozzle rotatably. In addition, the water conduit is fixed to the rinsing water pipe, and the water conduit that protrudes from the through hole of the concave and convex nut is inserted into an insertion hole of a nozzle holder that holds a nozzle header, and the water conduit is inserted into the water conduit. And screwed to the nut, cleaning nozzle and method of mounting rinsing nozzles, characterized in that the rinsing nozzles and rotatably secured to the water conduit.

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